Projector of transparencies perfected for the didactic production. (Machine-translation by Google Translate, not legally binding)

摘要

Improved transparencies projector, for didactic reproduction, characterized in that it is constituted by a base platform provided with the appropriate plug element for the electrical connection to the respective battery-carrying box, a hollow column being also coupled to said base, of whose faces a of them longitudinally presents a central opening escorted by two rows of teeth as a rack, making it possible by means of slight elastic deformation of the edges of the opening, the passage through it of the respective end of the cantilevered arm carrying the projector itself; this end has a "T" configuration and by means of the suitable rotation of the supporting arm, it is positioned preventing the frontal extraction of the latter, whose own weight as well as that of the projector determines a moment of rotation under which a perfect fit is verified. The toothing of the column of an interlocking and stop plate constituted by the supporting arm, so that by disengagement of the plate with respect to the toothing the free movement in height and guidance of the arm-projector assembly is enabled, while the selective the fitting of said plate enables the interlocking of said assembly at the desired height. (Machine-translation by Google Translate, not legally binding)